Weighing machine



4 Jan 1927 w. PULZ WEIGHING MACHINE Filed Feb. 1e. 1925 v Jar/enfer:

ma, m.

IWI

I I IIIIIIIII I A Iwwrllllwll--- e QIII IIIIIPWH.|U..T

Patented Jan. 4, 1927.

UNITED STATES PATENT OFFICE.

WEIGHING MACHINE.

Application filed February 16, 1925, Serial No. 9.607, and in GermanyFebruary 21, 1924.

My invention relates to weighing machines and more especially tomachines of the counterbalance type in which the load is balanced by theaddition or subtraction of weights.

lt is an object of my invention to prvide a weighing machine of thiskind which is simpler and more effective in use than similar machineshitherto designed. To this i" end I provide casings suspended from thebalance beam or beams of the weighing machine, ,ach casing containing aset of weights normally suspended side by side from seats provided inthe casings. The

if? weights of each set which exceed the weight of the load may belifted off and lowered onto their seats by handor motor-controlledmeans.

ln a. preferred embodiment of my invention a frame is provided which isadapted to engage the weights of a set, the Weights being; provided withlugs projecting from slots provided in the walls of the casing andadapted to be engaged by said frame. Each set is so designed as topermit the beam or beams to oecillate freely after each weight liftingoperation. The frame for lifting the weights is operated by a lever on ashaft, this being the approved construction in weighing; machines, as itfacilitates the connection of the operating devices with auxiliarymechanism such as indicators, ticket printing apparatus and the like.

All the weights of a set are perfectly :ia identical and are suspendedand handled in a substantially closed easing so that the weights cannotleave the casing and interference of the weights of one set with thoseof another set is effectively prevented.

Withr a casing provided for each set of weights it is possible to shipthe Weighing machine without fear of the weights jamming and thearrangement of the weights in their casings is absolutely fool-p1.'oof.

'lhe reduced depth andthe suspension of the easings on two knife edgesprovides a more favorable distribution of weights. The oscillations ofthe sets are reduced in propor tion to the reduced depth, without,however, interfering with the free play of each set on its edges.

The weight-handling frames are guided in uprinhts which are preferablypressed from sheet metal and are so shaped as not only to guide theframe, but also to protect the weights from damage and tan'iperinv'.

In the drawings afiixed to this specification and forn'iing partthereof, a device embodying' my invention is illustrateddiagrammatically by Way of example.

In the drawings- Fig. 1 is a perspective view of the beams of aweighingl machine and a set of weights in position thereon, only one setbeing shown for the sake of convenience.

Fig. Q is an elevation of a set of weights, partly drawn in section,

Fig. 3 is a front elevation and Fig'. 4 is a plan view.

Referring' to the drawings, 1, 1 are two beams suspended in bearings 2',2 on a. shaft 2 provided with knife edges. llhe load is applied to a bar3 at the ends of the beams. The sere 'al sets of weigh ts are suspendedin casings 16, only one of which is illustrated. Each casing' issuspended from the beams 1, 1 bypmeans of knife edges e', Il engagingseats formed in lugs of the casing.

The weights 7, si, io, n, 12, is, ii, 15 of a set are identical in shapeand weight and are suspended on lugs T, 8 Vwhich project from slots 7",8" in the transverse walls of the casing. '.lhe lugs have knife edgeswhich are adapted to eugage V-shaped seats at the ends of the slots sothat the weights are led to assume a vertical position in the casing.The weights are arranged symmetrically with regard to the central planeof the casing 16 but staggered in their vertical positions so that theliftii'ig' frame '17 will alternately lift weights on the right and theleft of the central plane so that the distribution of the weightsremains uniform.

lhe transverse plates of the lifting` frame 17 are provided with notches19 adapted to engage the edges of the lugs 7, 8 of the weights. Theframe 1T, which may also be tubular or U-shaped. is operated by a handlever 1S on a shaft 1S which can be secured in position by means of asegment 182 and a pawl 183 in its handle 1S". Two levers 21 and 22 aresecured on the shaft 18 at a distance equal to the width of the lifting;frame 17 and adapted to engage pins 93 and Q4 on said frame by slottedeyes. Pins and Q6 are secured in the frame vertically above the liftingpins 23, 24, these pins vervingl for guiding the frame in verticalgreove 2T anil QS ol vertical uprig'hts 20. This proviiles .lor acorrect guiding of the lr-aine and l'or nnilerin and reliable handlingo1 the weights.

For the salie el elearness the nprights 2O a re drawn narrower than theeasing 1S, l3nt in reality lhev are as ivicle as or Wider than theliran'ie 1T in oriler lo protect the Weights.

l wish it io he understood that I ilo not ilefire to ne lirnneil to theexact cletaili of consrncien shown anil (leserihecl, for obvionsl, nioliliealienf will occur to a person Aliilleil in the art.

l. Connerhalanee weighing machine coniprisingr a lucani, a easingSuspended 'from one arn. ol saifrl heani anbl having Seats formelltherein al' ilili'erenl level anil a rget el' weight; norinall)v sealedSiele hv siile On said Seals.

2. Connlerhalanee Weighing; machine Corn- 'jrir-iing a heainr` a easing`suspended 'from one arm ol' saiil heani and having` seats formeeltherein al; (lili'erent levels, a set of Weights nornialliv sealed sidehy side on said seats ani'l hand-Controlled means for lifting theweights in excess ol the load oli' their seats.

3. Connterbalanee weighing inaehine comprising a heani. a casing Sus])enclecl from saiil beam, a Set ol weights normally suspenilefl in saideasing7 lugs 0n said Weights ailapleil to Support said Weights in Saideafing' unil lo projeet 'lroni saiil easing when the weighle are sosuspended, at'raine surrounding :'aiil easing and adapt-ed to engagesaiil nrojeel'ing lugs and ineana 'for raising y ai l ilranie.

l. Connl'erhalanee Weighing inaehine com a ieani. a easing' suspendedfrom enil ol'y flaiil lieani. a Sel of weights norone inalltvvsneyrnilel V'roni seat@ provided in eaiil i'asingy, nrianey lor lifting'said Weights Ol'l llieir Seals. anil shee inelal nprighls having guideslor saiil lifting means.

In lez liiiioirv whereof l all'ix my signature.

Dir. WILLY PLZ.

